Welt-beating machine.



T. H. SEELY.

WELT BEATING MACHINE.

APPLICATION FILED JAN. 7, 1915.

2 SHEETS-SHEET 1.

Patented Nov. 2,

lllllllllllllall l I X l I] COLUMBIA PLANDGRAPH (10., WASHINGTON, n. c.

T. H. SEELY.

WELT BEATING MACHINE. APPLICATION FILED .IAN. 7.1915.

Patented Nov. 2, 1915.

2 SHEETS-SHEET 2- COLUMBIA PLANOGRAPH 00-. WASHINGTON, D. C-

' exerted by the operator upon the shoe rr mp0 THOMAS H. SEELY, 0F BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WELT-BEATING MACHINE.

To all whom it may concern Be it known that I, THOMAS H. SEELY, a citizen of the United States, residing at Dorchester, Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Welt-Beating Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to welt beating machines and more particularly to machines of this class provided with a vibratory welt beating hammer. In the operation of Welt beating machines of this type the hammer is vibrated with great rapidity and to feed the work the operator exerts a constant pull upon the shoe in the direction of feed so that the welt is advanced between the Welt sup port and the hammer between the strokes of the hammer while the hammer is disengaged from the welt. The rapidity with which the shoe is fed obviously depends upon the forcg an upon the length of time during which the hammer is disengaged from the Welt. In machines of this type heretofore constructed the length of the period during which the hammer is out of engagement with the welt is such that the operator is able to advance the welt a considerable distance between the strokes of the hammer and in such machines the work is often fed too rapidly by an inexperienced or careless operator with the result that the welt is not beaten out properly at all points. 7

The primary object of the present invention isto improve the construction and mode of operation of welt beating machines of this type with a view of rendering such machines more eflicient in operation and of preventing the operator from feeding the work too rapidly through the machine.

WVith this object in view one feature of the invention contemplates the provision ,in a welt beating machine having a vibratory hammer of means for actuating the hammer constructed to produce a prolonged dwell in the movement of the hammer While it is engaged with the welt and to accelerate the movement of the hammer while it is disengaged from the welt. The prolonged engagement of the hammer with the welt tends to set the fibers of the welt, thereby causing Specification of Letters Patent.

Patented Nov. 2, 1915.

Serial No. 955.

the welt to maintain its condition after the beating operation. By accelerating the movement of the hammer wh1le it is d1sen- 'gaged from the welt the time between the strokes of the hammer is rendered so brief that the operator is able to advance the welt only a very short distance between the strokes of the hammer and is unable to feed the welt too rapidly through the machine to produce an eilicient and satisfactory beating thereof.

Other features of the invention consist of certain novelv and improved constructions and combinations hereinafter described and particularly pointed out in the claims the advantages of which will be obvious to those skilled in the art.

In the drawings illustrating a machine embodying the invention in its preferred form Figure 1 is a view in side elevation of the machine; Fig. 2 is a view in rear elevation of the machine; Fig. 3 is a detail view in side elevation illustrating particularly the mechanism for actuating the hammer and Fig. 4i is a sectional view taken substantially on the line i 1 of Fig. 3.

The welt beating machine illustrated in the drawings has the same general construc tion and mode of operation as the welt heating machine illustrated and described in the patent to Hadaway, No. 875,171, dated December 31, 1907. This machine is provided with a welt support indicated at 2, the forward end of which is shaped to enter the crease between the upper and welt of a lasted shoe so as to support the welt on its upper surface as shown in Fig. 1. The welt support is secured to the frame of the machine by means of a clamping bolt 4 passing through a slot r in a forwardly projecting portion 6 of the frame and screwed into the shank of the welt support.

The welt beating hammer indicated at 8 is secured to the lower end of a rod 10 mounted to slide in a suitable guide bore in the forward end of the hammer lever 12. The reduced upper end of the rod 10 passes through a guide bore in an adjustable sleeve 14, the downward movement of the hammer in the forward end of the lever being limited by a stop nutlii threaded on the end of the rod. To cushion the blows delivered by the hammer upon the welt a coiled spring 18 surrounding the rod 10 within a cylindrical chamber in the forward end of the hammer lever is interposed between a collar on the rod and the lower end of the sleeve 14. The hammer lever 12 is mounted to oscillate upon a short shaft 20 suitably supported in the frameand the hammer is v1- brated by the oscillation of the lever 12 on this shaft.

The machine is provided with a drivlng shaft 22 on which is mounted a belt pulley 24: adapted to receive a. driving belt. The mechanism for oscillating the lever 12 from the shaft 22 is constructed and arranged to produce a substantial. dwell of considerable duration in the movement of the hammer lever while the hammer is engaged. with the welt .and to accelerate the movement of the hammer lever while the hammer is disengaged from the welt. In the construction illustrated, the rear end of the ham mer lever 12 is bifurcated or split and the arms 26 and 28 thereby formed are recessed to provide bearings for the cylindrical block 30 which is mounted to turn freely in its hearings in the arms. ,To enable the arms 26 and 28 to be relatively adjusted to fit the bearings to the block 30, adjusting screws 32 and 34; are provided. The adjusting screw 32 consists of a threaded sleeve which is screwed into a suitable threaded bore in the arm 26 and engages the arm 28 at its lower end. The screw 34 passes through the screw 32 and is threaded into the arm 28. To prevent the screw 34 from turning after the adjusting screws 32 and34 have been suitably adjusted a set screw 36 is threaded into the arm 28 and engages the screw 34. The block 30 is pivoted to turn loosely upon a crank 38 carried by the main shaft 22 of the machine. The relations of the axis of the block 30 and the axis of the crank 38 to each other and to the axis of the main shaft of the machine may be seen from an inspection of Fig. 3' in which the axis of the block is indicated at a the axis of the crank at b and the axis of the main shaft of the machine at 0. As will be noted the distance between the axis of the crank 38 and the axis of the block 30 is slightly greater than the distance between the axis of the crank and the axis of the main shaft of the machine. In this figure the mechanism is illustrated with the parts in the positions which they assume when the axis of the block 30, the axis of the crank 38 and the axis of the main shaft are brought into line or when the mechanism is on dead center and the rear end of the hammer lever is raised. During the operation of this mechanism the block 30 does not turn completely around in its bearings in the end of the hammer lever during each rotation of the shaft but oscillates back and forth in said bearings. With this construction when the crank 38 is turning over the center of the shaft 22 the axis of the block 30 is brought close to the axis of the shaft and therefore for a considerable portion of a revolution of the shaft the movement of the hammer lever is retarded so that a substantial dwell is said lever. This substantial dwell occurs when the end of the hammer is lowered and the hammer is engaged with the welt. In the construction illustrated the mechanism for actuating the hammer is adapted to pro duce a substantial dwell in the movement of the hammer lever during about one-third of a revolution of the main shaft of the machine. The substantial dwell in the movement of the hammer lever is produced while the crank 38 is turned from a position about one-sixth of a revolution behind thepositi on in which it is illustrated in Fig. 3 to a position about one-sixth of a revolution in advance of that in which it is shown in this figure. As usual in machines of this type the hammer is adjusted in the forward end of the hammer lever so as to engage the welt, before the forward end of the hammer lever completes its downward stroke, the spring 18 allowing the hammer to yield with relation to the hammer lever after the hammer engages the welt. This manner of mounting and adj usting the hammer in the hammer lever re sults in prolonging the dwell in the engagement of the hammer with the welt over that produced by the substantial dwell in the movement of the hammer lever itself with the result that a dwell in the engagement of the hammer with the welt may be produced during nearly one-half of a revolution of the main shaft of the machine, the length of the dwell depending upon the adjustment of the hammer in the hammer lever. while the hammer is disengaged from the welt consumes of course the portion of a revolution of the main shaft of the machine remaining after the prolonged dwell in. the engagement of the hammer with the welt. In the illustrated construction the hammer is disengaged from the welt only a relatively small period over one-half a revolution of the main shaft. lVith the machine running at high speed, ing which the hammer is disengaged from the welt is insuflicient to enable the operator to advance the welt too rapidly through the machine to produce a thorough and satisfactory beating of the welt.

The hammer actuating mechanism above described is constructed to produce the described improvements in the mode of operation of a hammer lever in a reliable manner and at the same time is especially adapted for use in a high speed machine since it is not particularly subject to wear and will not produce undue vibration or noise when the machine is running at high speed.

The machine is provided with a welt produced in the movement of i The movement of the hammer lever the time durslashing knife indicated at which is secured to the forward end of a reciprocating slide 42. The rear end of the slide is connected with an oscillating lever a l pivoted at 46 and provided with a cam roll 48 engaging a. cam groqye in a cam disk 52 mounted upon a rearwardly extending shaft 5- fixed in the frame of the machine. The main shaft carries a worm 56 meshing with the worm wheel 58 mounted on the shaft 54 alongside the cam disk 52. A sliding clutch pin 60 mounted on the cam disk and arranged to be moved into clutching engagement with the worm wheel is provided to connect the cam disk with the worm wheel so that the cam disk may be actuated to operate the welt slashing knife. The action of the clutch pin is controlled by a wedge 62 mounted upon the extremity of a lever 6a pivoted at 66 and normally held in ele vated position by a tension spring 68 to maintain the clutch pin disengaged from the worm wheel 58. The lever 64 may be depressed to allow the clutch pin to be actu ated to engage the worm wheel 58 and thereby connect the cam disk with the worm wheel by means of a treadle (not shown) connected with the lever by a treadle rod 70. This welt slashing mechanism is substantially the same as that illustrated and described in the patent to Hadaway above referred to.

Having explained the nature and object of the invention and having specifically described a machine embodying the same in its preferred form, what is claimed is 1. A welt beating machine, having in combination a support for the Welt of a lasted shoe, a vibratory hammer for beating Copies of this patent may be obtained for five cen the welt, and means for actuating the hammer constructed to produce a prolonged dwell in the movement of the hammer while it is engaged with the welt and to accelerate the movement of the hammer while it is disengaged from the welt.

2. A welt beating machine, having in combination a support for the welt of a lasted shoe, a vibratory hammer for beating the welt, an oscillatory lever upon which the hammer is mounted and means for actuating the lever, constructed to produce a prolonged dwell in the movement of the lever while the hammer is engaged with the welt, and to accelerate the movement of the lever while the hammer is disengaged from the welt.

3. A welt beating machine, having in combination a support for the welt of a lasted shoe, a vibratory hammer for beating the welt, a uniformly rotating shaft for actuating the hammer and actuating mecha nism between the shaft and the hammer constructed to produce a prolonged dwell in the movement of the hammer while it is engaged with the welt.

4;. A welt beating machine, having in combination a support for the welt of i lasted shoe, a vibratory hammer for beating the welt, an oscillatory lever upon which the hammer is mounted, a uniformly rotating shaft, a crank on the shaft and a cylindrical block mounted to turn in bearings in the lever and pivoted eccentrically on the crank.

THOMAS H. SEELY.

Witnesses:

CHESTER E. Roonns, LAURA M. GOODRIDGE.

ts each, by addressing the Commissioner of Patents,

Washington, D. G." 

